IPCC List of Greenhouse Gases
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This is a list of greenhouse gases as used by the IPCC TAR.
Gases relevant to radiative forcing only (per IPCC documentation)
| Gas | Alternate Name | Formula | 1998 Level | Increase since 1750 | Radiative forcing (Wm2) |
|---|---|---|---|---|---|
| Carbon dioxide | (CO2) | 365ppm | 87 ppm | 1.46 | |
| Methane | (CH4) | 1,745ppb | 1,045ppb | 0.48 | |
| Nitrous oxide | (N20) | 314ppb | 44ppb | 0.15 | |
| Tetrafluromethane | Carbon tetrafluoride | (CF4) | 80ppt | 40ppt | 0.003 |
| Hexafluoroethane | (C2F6) | 3 ppt | 3ppt | 0.001 | |
| Sulfur hexafluoride | (SF6) | 4.2ppt | 4.2ppt | 0.002 | |
| HFC-23* | Trifluoromethane | (CHF3) | 14ppt | 14ppt | 0.002 |
| HFC-134a* | 1,1,1,2-tetrafluoroethane | (C2H2F4) | 7.5ppt | 7.5ppt | 0.001 |
| HFC-152a* | 1,1-Difluoroethane | (C2H4F2) | 0.5ppt | 0.5ppt | 0.000 |
Gases relevant to radiative forcing and ozone depletion (per IPCC documentation)
| Gas | Alternate Name | Formula | 1998 Level | Increase since 1750 | Radiative forcing (Wm2) |
|---|---|---|---|---|---|
| CFC-11 | Trichlorofluoromethane | (CFCl3) | 268ppt | 268ppt | 0.07 |
| CFC-12 | Dichlorodifluoromethane | (CF2Cl2) | 533ppt | 533ppt | 0.17 |
| CFC-13 | Chlorotrifluoromethane | (CClF3) | 4ppt | 4ppt | 0.001 |
| CFC-113 | 1,1,1-trichlorotrifluoroethane | (C2F3Cl3) | 84ppt | 84ppt | 0.03 |
| CFC-114 | 1,2-dichlorotetrafluoroethane | (C2F4Cl2) | 15ppt | 15ppt | 0.005 |
| CFC-115 | Chloropentafluoroethane | (C2F5Cl) | 7ppt | 7ppt | 0.001 |
| Tetrachloromethane | Carbon tetrachloride | (CCl4) | 102ppt | 102ppt | 0.01 |
| 1,1,1-trichloroethane | Methyl chloroform | (CH3CCl3) | 69ppt | 69ppt | 0.004 |
| HCFC-141b | 1,1-Dichloro-1-Fluoroethane | (C2H3FCl2) | 10ppt | 10ppt | 0.001 |
| HCFC-142b | 1-Chloro-1,1-Difluoroethane | (C2H3F2Cl) | 11ppt | 11ppt | 0.002 |
| Halon-1211 | Bromochlorodifluoromethane | (CClF2Br) | 3.8ppt | 3.8ppt | 0.001 |
| Halon-1301 | Bromotrifluoromethane | (CF3Br) | 2.5ppt | 2.5ppt | 0.001 |
(Source: IPCC radiative forcing report 1994 updated (to 1998) by IPCC TAR table 6.1 [1]. See also [2].
